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Search for "electron microscopy" in Full Text gives 1153 result(s) in Beilstein Journal of Nanotechnology. Showing first 200.

Development of a mucoadhesive drug delivery system and its interaction with gastric cells

  • Ahmet Baki Sahin,
  • Serdar Karakurt and
  • Deniz Sezlev Bilecen

Beilstein J. Nanotechnol. 2025, 16, 371–384, doi:10.3762/bjnano.16.28

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  • nanoparticles Morphology of nanoparticles The morphological characterization of nanoparticles was done via scanning electron microscopy (SEM, Zeiss, GeminiSEM500) and scanning transmission electron microscopy (STEM, Ziess, GeminiSEM500). For SEM analysis, nanoparticles were air-dried on SEM stabs and coated
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Published 13 Mar 2025

Pulsed laser in liquid grafting of gold nanoparticle–carbon support composites

  • Madeleine K. Wilsey,
  • Teona Taseska,
  • Qishen Lyu,
  • Connor P. Cox and
  • Astrid M. Müller

Beilstein J. Nanotechnol. 2025, 16, 349–361, doi:10.3762/bjnano.16.26

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  • , rapid, scalable, acid-free process to make carbon fiber paper hydrophilic without destroying the carbon network, as other carbon fiber paper oxidation methods do [22], evident from scanning electron microscopy (SEM) imaging (Figure 2A). Hydrophilicity was achieved by graphitic edge carbon oxygenation
  • custom-made Teflon tub, in 2.0 mL of commercially available aqueous colloid of citrate-capped gold nanoparticles (100 nm, nanoComposix), followed by drying under a heat lamp at 60 °C for 20 min. Physical characterization Scanning electron microscopy (SEM) images were obtained at UR-Nano. A Zeiss Auriga
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Published 07 Mar 2025

Tailoring of physical properties of RF-sputtered ZnTe films: role of substrate temperature

  • Kafi Devi,
  • Usha Rani,
  • Arun Kumar,
  • Divya Gupta and
  • Sanjeev Aggarwal

Beilstein J. Nanotechnol. 2025, 16, 333–348, doi:10.3762/bjnano.16.25

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  • obtained micrographs were then analysed regarding various statistical parameters such as roughness, skewness, kurtosis, and power spectral density using the NanoScope Analysis software. Surface morphology and composition of the films were studied by field-emission scanning electron microscopy attached with
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Published 05 Mar 2025

Graphene oxide–chloroquine conjugate induces DNA damage in A549 lung cancer cells through autophagy modulation

  • Braham Dutt Arya,
  • Sandeep Mittal,
  • Prachi Joshi,
  • Alok Kumar Pandey,
  • Jaime E. Ramirez-Vick,
  • Govind Gupta and
  • Surinder P. Singh

Beilstein J. Nanotechnol. 2025, 16, 316–332, doi:10.3762/bjnano.16.24

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  • the specific experiment. Each group contained four technical replicates and three biological replicates for each experiment. In each assay cells without nanoconjugates were used as a control. Transmission electron microscopy analysis The A549 cells (2 × 105 cells/mL/well in 6-well plates) were exposed
  • nanoconjugates. The observed data with relative % are shown in Supporting Information File 1, Table S1. The morphological analysis of GO was carried out using field-emission scanning electron microscopy (FESEM) and high-resolution transmission electron microscopy (HRTEM). In Supporting Information File 1, Figure
  • to GO–Chl (25 μg/mL) for the determination of acidic vacuoles (scale bar = 50 μm). (b) Representative transmission electron microscopy photomicrographs of GO–Chl-(25 μg/mL) exposed A549 cells showing the presence of autophagosomes. Black arrows indicate the presence of autophagosomes. Scale bars are
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Published 03 Mar 2025

Fabrication and evaluation of BerNPs regarding the growth and development of Streptococcus mutans

  • Tuyen Huu Nguyen,
  • Hong Thanh Pham,
  • Kieu Kim Thanh Nguyen,
  • Loan Hong Ngo,
  • Anh Ngoc Tuan Mai,
  • Thu Hoang Anh Lam,
  • Ngan Thi Kim Phan,
  • Dung Tien Pham,
  • Duong Thuy Hoang,
  • Thuc Dong Nguyen and
  • Lien Thi Xuan Truong

Beilstein J. Nanotechnol. 2025, 16, 308–315, doi:10.3762/bjnano.16.23

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  • prepared using a wet-milling method with zirconium balls to enhance bioavailability and expand potential applications. The particle size and physicochemical properties of the BerNPs were analyzed using field-emission scanning electron microscopy (FE-SEM), UV–vis spectroscopy, X-ray diffraction, and Fourier
  • from the wells in the MIC assay were dripped on the TSA plate and incubated at 37 °C for 24 h. The MBC value was determined as the lowest concentration at which no visible bacterial colonies were observed. Evaluation of the effect of BerNPs on S. mutans cells Filed-emission scanning electron microscopy
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Published 27 Feb 2025

Enhancing mechanical properties of chitosan/PVA electrospun nanofibers: a comprehensive review

  • Nur Areisman Mohd Salleh,
  • Amalina Muhammad Afifi,
  • Fathiah Mohamed Zuki and
  • Hanna Sofia SalehHudin

Beilstein J. Nanotechnol. 2025, 16, 286–307, doi:10.3762/bjnano.16.22

Graphical Abstract
  • electron microscopy (SEM) and field-emission scanning electron microscopy (FESEM) are more commonly used to analyze the fiber diameter, distribution, and overall surface morphology [144]. Microscopic images obtained from these techniques help to identify defects such as beading or non-uniformity in fibers
  • , which can adversely affect mechanical performance. Besides SEM and FESEM, transmission electron microscopy (TEM) has the additional ability to visualize fiber cross sections and can be employed to examine core–shell, encapsulated, and particle-incorporated fiber structures [112][145][146]. Atomic force
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Published 26 Feb 2025

Preferential enrichment and extraction of laser-synthesized nanoparticles in organic phases

  • Theo Fromme,
  • Maximilian L. Spiekermann,
  • Florian Lehmann,
  • Stephan Barcikowski,
  • Thomas Seidensticker and
  • Sven Reichenberger

Beilstein J. Nanotechnol. 2025, 16, 254–263, doi:10.3762/bjnano.16.20

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  • detectible. Extinction values for the Cu and Fe colloids can be found in Supporting Information File 1, Table S1 and Table S2, and the fractions of colloidal NPs in the propylene carbonate phase are found in Supporting Information File 1, Table S3. High-resolution transmission electron microscopy (HRTEM
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Published 20 Feb 2025

Radiosensitizing properties of dual-functionalized carbon nanostructures loaded with temozolomide

  • Radmila Milenkovska,
  • Nikola Geskovski,
  • Dushko Shalabalija,
  • Ljubica Mihailova,
  • Petre Makreski,
  • Dushko Lukarski,
  • Igor Stojkovski,
  • Maja Simonoska Crcarevska and
  • Kristina Mladenovska

Beilstein J. Nanotechnol. 2025, 16, 229–251, doi:10.3762/bjnano.16.18

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Published 19 Feb 2025

Synthesis and the impact of hydroxyapatite nanoparticles on the viability and activity of rhizobacteria

  • Bedah Rupaedah,
  • Indrika Novella,
  • Atiek Rostika Noviyanti,
  • Diana Rakhmawaty Eddy,
  • Anna Safarrida,
  • Abdul Hapid,
  • Zhafira Amila Haqqa,
  • Suryana Suryana,
  • Irwan Kurnia and
  • Fathiyah Inayatirrahmi

Beilstein J. Nanotechnol. 2025, 16, 216–228, doi:10.3762/bjnano.16.17

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  • used as a carrier for two rhizobacteria strains (Pd and Tb). The structural and morphological properties of nHA were examined through XRD and scanning electron microscopy analyses. Rhizobacteria were encapsulated within the carrier material, and their viability was evaluated using the total plate count
  • . The morphology of the analyzed sample, observed through scanning electron microscopy (SEM) at magnifications of 15,000× and 50,000× are depicted in Figure 3. Figure 3 provides a clear view of the sample demonstrating spherical shapes with a consistent particle size distribution. The SEM analysis
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Published 18 Feb 2025

A review of metal-organic frameworks and polymers in mixed matrix membranes for CO2 capture

  • Charlotte Skjold Qvist Christensen,
  • Nicholas Hansen,
  • Mahboubeh Motadayen,
  • Nina Lock,
  • Martin Lahn Henriksen and
  • Jonathan Quinson

Beilstein J. Nanotechnol. 2025, 16, 155–186, doi:10.3762/bjnano.16.14

Graphical Abstract
  •  7d. For instance, in a study by Carja et al. [128], PIM-1 was functionalized with amidoxime groups to induce superior adhesion to UiO-66 in flat sheet MMMs, drastically reducing defect formation as predicted by molecular simulations and confirmed by field-emission scanning electron microscopy and
  • high-resolution transmission electron microscopy (HRTEM). Utilizing smaller MOF filler sizes is a straightforward approach to improve filler dispersion. The contact area with the polymer matrix increases when the size of MOF particles is decreased, promoting adhesion, and reducing interfacial defects
  • MMMs Material characterization techniques are pivotal for the assessment of novel MOF-based MMMs structures. Electron microscopy enables direct imaging of a sample with up to sub-nanometer resolution [139]. Scanning electron microscopy (SEM) is a popular and straightforward method to obtain images of
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Published 12 Feb 2025

TiO2 immobilized on 2D mordenite: effect of hydrolysis conditions on structural, textural, and optical characteristics of the nanocomposites

  • Marina G. Shelyapina,
  • Rosario Isidro Yocupicio-Gaxiola,
  • Gleb A. Valkovsky and
  • Vitalii Petranovskii

Beilstein J. Nanotechnol. 2025, 16, 128–140, doi:10.3762/bjnano.16.12

Graphical Abstract
  • studied composites. The scanning electron microscopy (SEM) image of the initial lamellar mordenite sample MOR-L is also shown for comparison. As can be seen, MOR-L exhibits elongated plates up to 1 μm long and 0.1 μm wide, combined into stacks. After introduction of TEOT followed by hydrolysis and
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Published 10 Feb 2025

Characterization of ZnO nanoparticles synthesized using probiotic Lactiplantibacillus plantarum GP258

  • Prashantkumar Siddappa Chakra,
  • Aishwarya Banakar,
  • Shriram Narayan Puranik,
  • Vishwas Kaveeshwar,
  • C. R. Ravikumar and
  • Devaraja Gayathri

Beilstein J. Nanotechnol. 2025, 16, 78–89, doi:10.3762/bjnano.16.8

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  • characterization using UV–vis spectroscopy, Fourier-transform infrared spectroscopy, X-ray diffraction measurements, energy-dispersive X-ray spectroscopy, scanning and transmission electron microscopy, photocatalytic studies, electrochemical analysis, and determination of antibacterial and anticancer activity. The
  • analysis, (b) Fourier-transform infrared (FTIR) spectroscopy, (c) UV–vis spectroscopy, and (d) photocatalytic efficiency of ZnO NPs. (a, b) Transmission electron microscopy (TEM) micrographs showing the morphology and size of the nanoparticles. (c) Selected area electron diffraction (SAED) pattern of ZnO
  • NPs with orange values representing the Miller indices of the diffraction planes, confirming the hexagonal wurtzite structure. (a, b) Scanning electron microscopy images depicting morphology, structure, and size of ZnO NPs. (c) Frequency distribution of nanoparticle sizes derived from SEM analysis. (d
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Published 30 Jan 2025

Instance maps as an organising concept for complex experimental workflows as demonstrated for (nano)material safety research

  • Benjamin Punz,
  • Maja Brajnik,
  • Joh Dokler,
  • Jaleesia D. Amos,
  • Litty Johnson,
  • Katie Reilly,
  • Anastasios G. Papadiamantis,
  • Amaia Green Etxabe,
  • Lee Walker,
  • Diego S. T. Martinez,
  • Steffi Friedrichs,
  • Klaus M. Weltring,
  • Nazende Günday-Türeli,
  • Claus Svendsen,
  • Christine Ogilvie Hendren,
  • Mark R. Wiesner,
  • Martin Himly,
  • Iseult Lynch and
  • Thomas E. Exner

Beilstein J. Nanotechnol. 2025, 16, 57–77, doi:10.3762/bjnano.16.7

Graphical Abstract
  • focused on silica (SiO2) nanomaterials in the size range of 50–100 nm (depending on the method used, i.e., transmission electron microscopy, nanoparticle tracking analysis, or dynamic light scattering (intensity or number distribution)) with different surface modifications, which are reported to be
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Published 22 Jan 2025

Precursor sticking coefficient determination from indented deposits fabricated by electron beam induced deposition

  • Alexander Kuprava and
  • Michael Huth

Beilstein J. Nanotechnol. 2025, 16, 35–43, doi:10.3762/bjnano.16.4

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  • precursors. This work has been performed within the Frankfurt Center for Electron Microscopy (FCEM). Funding This work has been supported by the Deutsche Forschungsgemeinschaft (DFG) via grant HU 752/16-1.
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Published 13 Jan 2025

Bioinspired nanofilament coatings for scale reduction on steel

  • Siad Dahir Ali,
  • Mette Heidemann Rasmussen,
  • Jacopo Catalano,
  • Christian Husum Frederiksen and
  • Tobias Weidner

Beilstein J. Nanotechnol. 2025, 16, 25–34, doi:10.3762/bjnano.16.3

Graphical Abstract
  • shear stress at the plate is reported in Figure 2D for different angular velocities and corresponding volumetric flow rates. Super-hydrophobicity of SNF coatings on steel Figure 3A shows a scanning electron microscopy (SEM) image of a stainless-steel surface coated with SNFs. The wire-type structures
  • induce corrosion of the samples. Scanning electron microscopy and energy-dispersive X-ray spectroscopy measurements Scanning electron microscopy images were acquired in a TESCAN CLARA (S8151) using the ANALYSIS and the UH-resolution scan mode with an accelerator voltage of 15 keV and 10 keV, a beam
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Published 09 Jan 2025

A nanocarrier containing carboxylic and histamine groups with dual action: acetylcholine hydrolysis and antidote atropine delivery

  • Elina E. Mansurova,
  • Andrey A. Maslennikov,
  • Anna P. Lyubina,
  • Alexandra D. Voloshina,
  • Irek R. Nizameev,
  • Marsil K. Kadirov,
  • Anzhela A. Mikhailova,
  • Polina V. Mikshina,
  • Albina Y. Ziganshina and
  • Igor S. Antipin

Beilstein J. Nanotechnol. 2025, 16, 11–24, doi:10.3762/bjnano.16.2

Graphical Abstract
  • electron microscopy (TEM) images were taken with a Libra 120 EFTEM (A Carl Zeiss SMT AG Company, Oberkochen, Carl Zeiss, Germany) at 100 kV. Samples were spread on a 300 mesh copper grid with a carbon/formvar support film. 1H and 13C NMR spectra were obtained using a Bruker Avance 600 spectrometer with an
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Published 09 Jan 2025

Orientation-dependent photonic bandgaps in gold-dust weevil scales and their titania bioreplicates

  • Norma Salvadores Farran,
  • Limin Wang,
  • Primoz Pirih and
  • Bodo D. Wilts

Beilstein J. Nanotechnol. 2025, 16, 1–10, doi:10.3762/bjnano.16.1

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  • . The domains in lattice orientation {100} exhibited polarization conversion. The structure inferred from optical measurements was confirmed using conventional and focused ion beam scanning electron microscopy (FIB-SEM). By averaging the reciprocal space images obtained from different lattice
  • scales are composed of chitin and an undetermined short-wavelength absorbing pigment. To investigate whether the origin of the coloration is structural, we examined the external and internal structure of intact and plasma-etched elytral scales using scanning electron microscopy (Figure 2). Using a
  • × (NA = 0.60) objective. A white diffuse reference tile (WS-2, Avantes) was used as the reference for spectroscopy measurements. Illumination was provided by a xenon or a halogen light source. Electron microscopy Top-view images of single scales were acquired with a Zeiss Ultra Plus 55 scanning electron
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Published 02 Jan 2025

Attempts to preserve and visualize protein corona on the surface of biological nanoparticles in blood serum using photomodification

  • Julia E. Poletaeva,
  • Anastasiya V. Tupitsyna,
  • Alina E. Grigor’eva,
  • Ilya S. Dovydenko and
  • Elena I. Ryabchikova

Beilstein J. Nanotechnol. 2024, 15, 1654–1666, doi:10.3762/bjnano.15.130

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  • ) in fetal bovine serum and newborn bovine serum; native sera served as a control. To isolate photomodified bio-NPs, we used ultracentrifugation (UC), sucrose gradient (12%, 30%, and 50%), and sucrose cushion (30%) methods. Isolated bio-NPs were visualized using transmission electron microscopy. The
  • that, in addition to EVs, other “natural” NPs are present in the blood, namely, lipoproteins (LPs), which are not vesicles. The content of LPs in blood is incomparably higher than that of EVs [5][16]. Previously, we detected LPs using transmission electron microscopy (TEM) in various biological fluids
  • supernatant was removed, the pellet was resuspended in 50 μL of remaining supernatant, and the samples were prepared for TEM examination. Photomodified FBS or NBS samples containing bio-NPs were purified in the same way. Transmission electron microscopy The size of bio-NPs determines the leading role of TEM
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Published 30 Dec 2024

Fabrication of hafnium-based nanoparticles and nanostructures using picosecond laser ablation

  • Abhishek Das,
  • Mangababu Akkanaboina,
  • Jagannath Rathod,
  • R. Sai Prasad Goud,
  • Kanaka Ravi Kumar,
  • Raghu C. Reddy,
  • Ratheesh Ravendran,
  • Katia Vutova,
  • S. V. S. Nageswara Rao and
  • Venugopal Rao Soma

Beilstein J. Nanotechnol. 2024, 15, 1639–1653, doi:10.3762/bjnano.15.129

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  • techniques The synthesised NPs were drop-cast on carbon-coated copper grids to record transmission electron microscopy (TEM) images and selected area electron diffraction (SAED) patterns using a FEI Tecnai G2 S-Twin operating at 200 kV. Further, these NPs were drop-cast on cleaned Si substrates, and their
  • morphology was analysed using field-emission scanning electron microscopy (FESEM); the composition was determined by EDX attached to the FESEM (Carl Zeiss Smart SEM ULTRA 55). Reflectivity was investigated using a UV–vis–NIR spectrometer (PerkinElmer Lambda 750). For photoluminescence (PL) measurements, a
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Published 18 Dec 2024

Natural nanofibers embedded in the seed mucilage envelope: composite hydrogels with specific adhesive and frictional properties

  • Agnieszka Kreitschitz and
  • Stanislav N. Gorb

Beilstein J. Nanotechnol. 2024, 15, 1603–1618, doi:10.3762/bjnano.15.126

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  • its composition [14][15][16]. The nanoscale level of the spatial organisation of mucilage observed with scanning electron microscopy (SEM) reveals the complexity of the mucilage with special features, such as 3D organisation of polysaccharides in a net-like structure [7][13]. In the last years, the
  • atomic force microscopy (AFM), transmission electron microscopy (TEM), SEM, or cryo-SEM [45][57][63][64][65][66]. Very often, the procedures for preparing mucilage envelope samples can destroy and/or influence the organisation of polysaccharides, making the analysis of spatial structure of the mucilage
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Published 13 Dec 2024

Liver-targeting iron oxide nanoparticles and their complexes with plant extracts for biocompatibility

  • Shushanik A. Kazaryan,
  • Seda A. Oganian,
  • Gayane S. Vardanyan,
  • Anatolie S. Sidorenko and
  • Ashkhen A. Hovhannisyan

Beilstein J. Nanotechnol. 2024, 15, 1593–1602, doi:10.3762/bjnano.15.125

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  • Sonic-150W, MRC, Israel) at 80% power with an on/off cycle of 5/4 s. During the synthesis of the nanoparticles, a black precipitate with paramagnetic properties formed. Nature and morphology of this precipitate were determined using electron diffraction and transmission electron microscopy (TEM, LEO-912
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Published 11 Dec 2024

Ultrablack color in velvet ant cuticle

  • Vinicius Marques Lopez,
  • Wencke Krings,
  • Juliana Reis Machado,
  • Stanislav Gorb and
  • Rhainer Guillermo-Ferreira

Beilstein J. Nanotechnol. 2024, 15, 1554–1565, doi:10.3762/bjnano.15.122

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  • of the ultrablack cuticle in Traumatomutilla bifurca, an enigmatic and visually striking species of velvet ants (Hymenoptera, Mutillidae). Using a combination of scanning electron microscopy (SEM), transmission electron microscopy (TEM), confocal laser scanning microscopy (CLSM), and optical
  • sunlight (personal observations). For subsequent analyses, we utilized female specimens collected from Caatinga regions in Pernambuco, Brazil (09°19’44.2’’S, 42°33’30’’W) in February 2022. The specimens were preserved in absolute alcohol. Scanning electron microscopy (SEM) To investigate the internal
  • different magnifications, starting at 15,000× and adjusted as needed. Transmission electron microscopy (TEM) TEM was utilized to examine the internal cuticle morphology at high resolution at a nanometer scale. The apparatus was configured to operate at 50 kV with a minimum vacuum column pressure of 5.10
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Published 02 Dec 2024

Electrochemical nanostructured CuBTC/FeBTC MOF composite sensor for enrofloxacin detection

  • Thi Kim Ngan Nguyen,
  • Tien Dat Doan,
  • Huy Hieu Luu,
  • Hoang Anh Nguyen,
  • Thi Thu Ha Vu,
  • Quang Hai Tran,
  • Ha Tran Nguyen,
  • Thanh Binh Dang,
  • Thi Hai Yen Pham and
  • Mai Ha Hoang

Beilstein J. Nanotechnol. 2024, 15, 1522–1535, doi:10.3762/bjnano.15.120

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  • electrode, an Ag/AgCl/saturated KCl reference electrode, and a carbon paste electrode (CPE) or MOF-modified electrodes as working electrodes. Physical and chemical properties of MOFs were characterized by using field-emission scanning electron microscopy (FESEM, Hitachi S-4800, Japan), energy-dispersive X
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Published 28 Nov 2024

Effect of radiation-induced vacancy saturation on the first-order phase transformation in nanoparticles: insights from a model

  • Aram Shirinyan and
  • Yuriy Bilogorodskyy

Beilstein J. Nanotechnol. 2024, 15, 1453–1472, doi:10.3762/bjnano.15.117

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  • based on the fact that the movement of dislocations is impeded by particle surfaces (grain boundaries) quite rapidly. For example, a transmission electron microscopy study (irradiation with Kr ions at 1 MeV at room temperature and an average defect generation rate of about 2 × 10−3 dpa·s−1) showed that
  • film through in situ ion irradiation, observed using atomic-resolution transmission electron microscopy [16]. The gold sample was irradiated with 2.8 MeV Au4+ ions at 200 °C with a fluence of approximately 1014 ions·cm−2 (equivalent to a dose of 10 dpa). A combination of surface- and radiation-induced
  • et al. used transmission electron microscopy to investigate nanoscale Pd under 240 keV Kr ion irradiation with a flux of 1013 ions·cm−2·s−1. Pd had grain sizes, d, ranging from 10 to 100 nm. The authors found that the defect density increases with increasing grain size d, and the slope between defect
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Published 21 Nov 2024

Various CVD-grown ZnO nanostructures for nanodevices and interdisciplinary applications

  • The-Long Phan,
  • Le Viet Cuong,
  • Vu Dinh Lam and
  • Ngoc Toan Dang

Beilstein J. Nanotechnol. 2024, 15, 1390–1399, doi:10.3762/bjnano.15.112

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  • results prove that ZnO exhibits many novel nanostructures that can foster the development of next-generation optoelectronic nanodevices and new applications in biological and biomedical fields. Keywords: chemical vapour deposition; electron microscopy; Raman and photoluminescent spectra; ZnO
  • down to collect white products formed on Si substrates. They were characterized by scanning electron microscopy (SEM, JEOL-6330F) and energy-dispersive X-ray (EDX) spectroscopy. Renishaw’s RS and PL spectrometers operating with laser wavelengths of 488 and 325 nm were also employed to study phonon
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Published 11 Nov 2024
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